feat(mcp): shared MCP servers reach every agent session

README.md

@@ -84,6 +84,15 @@ yay -S t3code-nightly-bin
 
 The AUR packaging is maintained in this repository under [`packaging/aur`](./packaging/aur).
 
+## Share MCP servers with every agent
+
+Add an MCP server once in **Settings → Integrations → Shared MCP servers**, and every new agent session can use its tools, whichever provider runs it. T3 Code connects to the server for the agents, so logins stay in T3 Code:
+
+- **OAuth servers** such as Linear (`https://mcp.linear.app/mcp`), Notion (`https://mcp.notion.com/mcp`), or Sentry (`https://mcp.sentry.dev/mcp`): add the URL, then choose **Sign in** and approve in your browser. T3 Code keeps the login and refreshes it.
+- **Token servers** such as GitHub (`https://api.githubcopilot.com/mcp/`): add a header like `Authorization: Bearer <personal-token>`. It's stored as a secret.
+
+Agents never see the tokens. See [Shared MCP servers](./docs/user/shared-mcp-servers.md).
+
 ## Some notes
 
 We are very very early in this project. Expect bugs.
@@ -101,6 +110,7 @@ Full docs live in [docs/](./docs). There's no docs site yet.
 - [Appearance preferences](./docs/user/appearance.md)
 - [Remote access from a phone or another machine](./docs/user/remote-access.md)
 - [Connect Claude Code, Codex, ChatGPT and other agents over MCP](./docs/user/outside-agents.md)
+- [Share MCP servers, including ones that need a login, with every agent](./docs/user/shared-mcp-servers.md)
 - [Keeping app and server in sync](./docs/user/updating.md)
 - [Source control integrations](./docs/user/source-control.md)
 - Multiple accounts: [Codex](./docs/user/providers-codex.md) · [Claude](./docs/user/providers-claude.md)

apps/mobile/src/Stack.tsx

@@ -84,6 +84,7 @@ import { SettingsAuthRouteScreen } from "./features/settings/SettingsAuthRouteSc
 import { SettingsEnvironmentDetailRouteScreen } from "./features/settings/SettingsEnvironmentDetailRouteScreen";
 import { SettingsEnvironmentsRouteScreen } from "./features/settings/SettingsEnvironmentsRouteScreen";
 import { SettingsFollowUpRouteScreen } from "./features/settings/SettingsFollowUpRouteScreen";
+import { SettingsSharedMcpServersRouteScreen } from "./features/settings/SettingsSharedMcpServersRouteScreen";
 import {
   SettingsEnvironmentAgentBehaviorRouteScreen,
   SettingsEnvironmentMaintenanceRouteScreen,
@@ -244,6 +245,11 @@ const SettingsContentStack = createV5SheetStackNavigator({
       linking: "provider-accounts",
       options: { title: "Provider accounts" },
     }),
+    SettingsSharedMcpServers: createNativeStackScreen({
+      screen: SettingsSharedMcpServersRouteScreen,
+      linking: "shared-mcp-servers",
+      options: { title: "Shared MCP servers" },
+    }),
     SettingsEnvironmentMaintenance: createNativeStackScreen({
       screen: SettingsEnvironmentMaintenanceRouteScreen,
       linking: "maintenance",

apps/mobile/src/features/settings/SettingsRouteScreen.tsx

@@ -205,6 +205,12 @@ function SettingsIndexSections() {
           target="SettingsEnvironmentAgentBehavior"
           disabled={noServerTargets}
         />
+        <SettingsRow
+          icon="server.rack"
+          label="Shared MCP servers"
+          target="SettingsSharedMcpServers"
+          disabled={noServerTargets}
+        />
         <SettingsRow
           icon="arrow.clockwise"
           label="Maintenance"